Fracture Failure Analysis of Fuel Pump Transmission Shaft of Dual-Fuel Engine

Fracture Failure Analysis of Fuel Pump Transmission Shaft of Dual-Fuel Engine

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NTS6ZLCz-129 dual-fuel turbocharged and intercooled engine durability test at 1000h, att nighthawk hotspot fuel pump shaft fractured.Fracture analysis, chemical analysis, microstructure examination and finite element stress analysis were carried out on the fractured shaft.The analysis result cap sleeve layering tee showed that the shaft fracture cause is forging fold.

By improving the forging process, the forging fold was solved, and the durability test can be carried out smoothly.